The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 28, 2017
Filed:
Oct. 04, 2012
Xylem Ip Holdings Llc, White Plains, NY (US);
Patrik Andersson, Skogås, SE;
XYLEM IP HOLDINGS LLC, White Plains, NY (US);
Abstract
The invention relates to a pump for pumping contaminated liquid comprising solid matter, the pump comprising a hydraulic unit (), a drive unit (), and a sealing unit (), the hydraulic unit having a pump chamber () and an impeller () that is suspended in a drive shaft (), said impeller and said drive shaft forming a rotatable unit, the sealing unit comprising a seal housing cover () that delimits said pump chamber () and that forms a seat for a drive shaft sealing assembly (), the seal housing cover () comprising a first gap-delimiting part () and the rotatable unit comprising a second gap-delimiting part (), which jointly define an axially extending gap () situated in the pump chamber. The pump is characterized in that, in each arbitrary radially extending plane taken through said gap (), the first gap-delimiting part () has a broken circular outer gap-delimiting surface () at the same time as the second gap-delimiting part () has a broken circular inner gap-delimiting surface ().